morrison



(No Model.) 3 Sheets-Sheet 1.

J. H. MORRISON & 0. L. ALLEN;

I AUTOMATIC BORING MACHINE.

No. 361,832. Patented Apr. 26, 1887.

(No Model.) 3 Sheets-Sheet 2.

J.,I-I. MORRISON & (L L. ALLEN.

' AUTOMATIC BORING MACHINE.

No. 861,832; Patented Apr. 26, 1887,.

3 Sheets-Sheet 3.

J. H. MORRISON & 0. L. ALLEN AUTOMATIC BORING MAGHINE.

No. 361,832. Patented Apr. 26, 1887.

(No Model.)

NITE

STATES- Arnr J. HENRY MORRISON AND CLINTON L. ALLEN, OF NORWICH, CONN. ASSIGNORS TO THE ALLEN SPOOL AND PRINTING COMPANY, OF SAME PLACE.

AUTOMATIC BORING-MACHlNE.

SPECIFICATION forming part of Letters Patent No. 361,832, dated Apri 1337- Application filed September 21, 1885. Serial No. 177,669. (No model.)

To all whom it may concern:

Be it known that we, .T. HENRY MORRISON and CLINTON L. ALLEN, both of the city of Norwich, county of New London, and State of Connecticut, have invented certain new and useful Improvements in Automatic Boring- Maehines, which improvements are fully set forth and described in the following specification, reference being had to the accompanying 1o drawings.

Our improvements relate to a new combination of mechanical devices by means of which spool-blanks, braid-rolls, or other analogous articles of uniform size and shape are fed or 1 moved, one by one, to a given place, where they are firmly held while a drill or bit advances and bores a hole in or through them. As the drill recedes the holding mechanism releases said bored blank and another blank takes its place and is properly clamped before the drill again advances.

In the annexed drawings, Figure 1 is an end elevation of our improved boring-machine, and Fig. 2 a side elevation of the same. Fig. 3 is an enlarged view, partly in section, showing the clamping mechanism employed to hold the blanks while in the act of boring, and also illustrates the means which we have provided to adjust said mechanism to hold blanks of greater or less diameter. Fig. 4 is a detached top view of the adjustable feed-trough; Fig. 5, a detached view of the innerforked end of arm n and its operating-cam; and Fig. 6-is a top detached view of the arm f, which, reaching around the feed-trough, carries the cut-off plate 6.

A represents the bed of our machine, supported by standards B B. At a convenient point below the bed A is a shaft, C, having bearings in the standards 13 B, and kept in continuous rotary motion by a driving-pulley, D. Bolted to the bed A are uprights a, having secured to their upper ends, or formed as an integral part of the same casting, a hori- 5 zontal frame, 12, said frame being located immediately over the mechanism which receives and clamps the blank about to be bored. Secured to this supporting-frame b by right-angular slotted lugs 1 2 3 4 are vertical guidestrips 0 c c 0 which form the walls of the feed chute or trough. Strip c may, if preferred, be rigidly attached to frame I), but strips 0, c and c are secured ad ustably to said frame, in order that they may be moved backward or forward to receive larger or 5 smaller blanks, as the case may be. The feedtrough thus provided is kept filled with blanks, either by the operator In charge of the machine or by a suitable automatic feeder, into whose hopper the blanks are poured in bulk and from which they drop into the trough as the line of blanks descends in said trough. The blanks, as they move downward by gravlty in the trough, come in contact with and are checked by aplate, e, which is secured ad ustably to and moves with the clamping-block E. This clamping-block has secured to its upper side a metallic frame, f, which, extending around the feed-trough, carries a plate, h, provided as a cutoff, so that but one blank can leave the trough at each complete movement of the clamping-block E.

Block E has a transverse movement n su table ways or guides) on bed A, stopping in the position seen in Fig. 3 while a blank 18 7 5 being bored, then receding to allow the bored blank to drop out of the way and allow another blank to drop into place to be bored.

As the block E recedes the cutoff plate h passes under the line of blanks, supportlng 8o them in the trough until block E again advances, when the line of blanks moves downward in the trough until the lowest blank rests on the stop-plate 6, having traveled a distance equal to the diameter of a single blank. Thus it will be seen that the two plates 6 and 'h, working in unison with the block E, release a single blank at each forward and backward movement.

Pivoted in the outer end of the clampingc block E is a lever-arm, whose lower end is pivoted in a bracket secured to one of the braces or girders which bind together and stiffen the machine-frame.

Screwed in bed A at a point opposite to 5 the arm 9 is a machine-screw, 70, whose head forms an adjustable stop against which arm 9 impinges, the forward movement of said arm being limited by the position of said screwhead.

In Fig. lwe have shownadouble machine that is to say, a machine with duplicate mech- IOO anism placed side by side on the same superly adjusted in connection with the vertical porting-frame, but operated by a single cenadjustment of the stop-plate e (as referred to tral driving-shaft and a single series of cams. In such a form the lever-arm g and its mate g, on the opposite side, are connected by a stiff spiral spring, 19, which acts with a constant tendency to draw said lever-arms inward. In a single machine the inner end of said spring would be secured to the machine-frame.

Iivoted to arm 9, at or near its central portion, is a rod, a, whose inner end is forked and straddles shaft 0, the arms of the fork being somewhat longer than the desired movement of rod n. This forked piece a has on one side a small pulley, 0, which rides on the periphery of cam I, and is moved outward by each revolution of said cam. It will now be understood that as shaft 0 revolves cam I will force the forked rod n and arm 9 outward, said arm carrying with it the clamping-block E and the cut-off mechanism above described, and as cam- I continues its round, springp acts to move said parts (forked rod, arm and clamping mechanism) inward again.

As a further means for holding a blank while being bored,we have provided a rod, H, sliding in suitable bearings and held forward against the end of the blank by a spiral spring, a", with a tendency to straighten up each blank and hold its face at right angles with the drill. To move rod H and release the bored blank, we use an arm, K, hinged at its lower end and having on one side a friction-pulley which engages cam m on the shaft 0, said cam being so timed relative to the other movable elements that it acts to move rod H outward as the drill recedes.

Having thus described the feeder and clamping parts and the devices which move them,we will now proceed to describe the reciprocating drill-arbor N, which has a sliding movement in bearings forming, practically, a part of bed A, and is kept in continuous rotary motion by the belt P and pulley Q.

On arbor N is a collar, it, having trunnions which engage the forked end of lever-arm B, said arm being pivoted at its lower end to a frame supported by rods to. Pivoted in arm R, at a point opposite shaft 0, is a frictionpulley, e, which rests on cam S. Within the bed A is a strong spiral spring, w, one of Wh ose ends is made fast to said bed, the other end being connected to arm R, near its free end. When in operation, spring w holds pulley 22 against the face of cam S, and said cam at each revolution forces arm R and drill-arbor N outward, or away from the bored blank, acting against the force of spring to. The clampingblock E has on the upper side of its inner end a longitudinally-adj ustable piece, E, said piece being adjusted by means of screw y in arm f, and when properly adjusted is securely clamped to the block E by a screw or bolt, 12. The inner end of said adjustable piece E unites with the inner end of clamping-block e to form a holding-surface, substantially V-shaped, and it will be seen that when said piece is propbelow) blanks of various diameters may be securely clamped. The opposite side of the blank rests against a rectangular block, T, which is held rigidly in gibbed ways, being adjusted to the desired position by a nut, 5, on a screw, 6, whose head impinges against an upward extension, 7, on the bed A. The stopplate 6 is so secured to the clamping-block E that when its binding-screw is loosened said plate may be lowered to accommodate blanks of larger diameter, the plate proper preserving at all times a horizontal position, but moving diagonally. Inasmuch as there' is aposslbility of a blank becoming wedged or blocked within the holding mechanism, we. have pro-. vided safety-joints in arms 9 and B, so that if a blank should fail to drop after being bored no injury could come to the machine. This safety device consists of a joint in said arms 9 and R at 8, said joint being kept closed so long as the machine works perfectly by a spring, 9, one of whose ends is secured to the main arm, and the other end fastened to a right-angular arm, 10, formed as a part of the shorter portion of said arms 9 and B. So long as the machine continues to work perfectly the jointed arms 9 and R are each practically a single piece; but should a blank become wedged, so that the holding-block E and cutoft' cannot move outward to their proper positions, the' springs 9 yield, allowing the joints above referred to to open, as shown in dotted lines in Figs. 1 and 2.

Theaction of our machine when in use is as follows: As shaft 0 rotates cam I causes arm 9 and block E to move, allowing a single blank to drop into place to be bored, as in Fig. 3. The rod H now movesforward against the end of said blank, being held forward by spring 1". At the instant the blank is thus firmly secured the drill advances, bores a hole, and recedes, when rod H is moved outward by cam M, and the clamping-block E is moved to release the finished blank and admit a new one.

What we claim as new, and wish to secure by Letters Patent, is-

1. In combination with a feed-trough substantially of the form described, a transverselymovable clamping-block located at the discharge end of said trough, having secured thereto and adapted to move therewith a stop plate, 6, to limit the downward movement of the blank about to be bored, and a cutoff plate, h, to check the line of blanks in said trough when the clamping device is opened, said cutoff plate being placed on the opposite side of the trough from the clamping-face of the said movable block when the parts are in clamping position, all being substantially as herein described, and for the objects set forth.

2. In a suitable supporting-frame, in combination with a continuously rotating reciprocating arbor and drill, a feed-trough whose discharge end is located in the path of said drill, and a checking, clamping, and releasing device having both the cut-off plate It and stopplate 6, secured to and adapted to move with the movable section of the clamp, said cut-oft plate being placed on the opposite side of the trough from the clamping-face of the movable section when the parts are in clamping position and above the level of the stopplate a distance equal to the diameter of a single blank, substantially as herein described, and for the objects set forth.

3. In combination with a feed-trough substantially of the form described and a trans by lever-arm g, forked arm a, spring 1;, and the continuously-rotating cam I, all of sa1d parts being combined and used substantially as and for the purpose specified.

5. In combination with a reciprocating drillarbor and drill and asuitable feed-trough, the clamping-block E, mechanism for cutting off the line of blanks, an adjustable abutting block, T, and the stop-plate 6, so secured to the block E that it may be raised or lowered to support blanks of greater or less diameter, substantially as described.

6. In combination with areciprocating drillarbor and drill and a suitable feed-trough, the clamping-block E, having secured adjustably thereon the auxiliary block or slide E, mechanism for cutting off the line of blanks, an adjustable abutting block, T, and the stop-plate e, so secured to the block E that it may be raised or lowered, all substantially as and for the objects set forth.

J. HENRY MORRISON. CLINTON L. ALLEN.

WVitnesses:

FRANK H. ALLEN, EDWIN ALLEN. 

